113 series running on the Ome or Itsukaichi Line?

[gmat]

Yesterday I cycled to the Yokota Friendship Day and stopped on the way to shoot some train photos. At Haijima, I shot the Seibu Line from the southeastern perimeter of the station. I was surprised to see what appeared to be a 113 in the green/orange markings going North on the other side of the station. I didn't think to snap a photo as it was far away. This was a little past 8:01 AM. I grabbed my junk and cycled to the northeastern side of the station perimeter but didn't see anything. Anyone hear anything about this?

 

Best wishes,

Grant

[bikkuri bahn]

It was probably the summer weekends-only Musashino Okutama Go 115 series train.

[miyakoji]

Interesting topic Gmat, I'm so unfamiliar with JRE's weekend and holiday specials.  And that's a great video Bikkuri.  I did not know that there's a connection between the Musashino Line and the Chuo Line.  Sure enough there is, underground.  Just on the other side of Kunitachi is where the Railway Technical Research Institute's access line used to be.  Kind of surprises me that they don't have a link to a real line.